#include <iostream>
#include <vector>
using namespace std;
vector <bool> count_(int n, vector<vector<bool>> bin, int l, int r){
    vector <bool> a(32);
    for (int i=0; i<32; i++){
        for (int j=l; j<r; j++){
            if (bin[j][i]){
                a[i]=1;
            }
        }
    }
    return a;
}
bool bin_search(int n, int k, vector<vector<bool>> bin, int l){
    int r=n;
    while (r-l>1){
        int m=(r+l)/2;
        vector <bool> a;
        a=count_(n, bin, l, m);
        int sum;
        for (int i=0; i<32; i++){
            if (a[i]){
                sum+=(1<<(31-i));
            }
        }
        if (sum>k){
            r=m;
        }else if (sum<k){
            l=m;
        }
        else{
            l=m;
            return true;
        }
    }
    return false;
}
int main(){
    //freopen("or.in", "r", stdin);
    //freopen ("or.out", "w", stdout);
    int n, k;
    cin>>n>>k;
    vector <int> h(n);
    for (int i=0; i<n; i++){
        cin>>h[i];
    }
    vector <int> h2(n);
    h2=h;
    vector <vector<bool>> bin(n, vector <bool> (32));
    for (int i=0; i<n; i++){
        for (int j=31; j>=0; j--){
            bin[i][j]=h2[i]/(1<<j);
            if (bin[i][j]){
                h2[i]-=(1<<j);
            }
        }
    }
    bool a=0;
    int l1;
    for (int l=0; l<n; l++){
        if (bin_search(n, k, bin, l)){
            a=1;
            l1=l;
        }
    }
    if (a){
        cout<<"YES"<<"\n";
        cout<<l1;
    }
    else{
        cout<<"NO";
    }
}